Here is a list of Koch products.
Koch Brothers and Koch Industries from:
It was probably here before, this list, so here it is, again.
Koch Industry Gasoline:
Chevron
Union
Union 76
Conoco
-American Greetings** (took heavy Koch investment, upwards of $200 million)
-Angel Soft
-Angel Soft Ultra
-Brawny paper towels
-Dixie products
-Insulair cups
-Mardis Gras napkins
-Perfect Touch cups, paper products
-Quilted Northern
-Sparkle paper towels
-Vanity Fair napkins & paper towels
-Zee Napkins
-Georgia-Pacific Office products
-Spectrum paper
-Georgia-Pacific's enMotion paper towel dispenser
-Georgia-Pacific's engineered lumber
Georgia Pacific Building products:
Dense Armor Drywall and Decking
ToughArmor Gypsum board
Georgia pacific Plytanium Plywood
Flexrock
Densglass sheathing
G/P Industrial plasters (some products used by a lot of crafters)-
Agricultural Plaster
Arts & Crafts Plaster
Dental Plaster
General Purpose Plaster
Glass-reinforced Gypsum (GRG),etc.
INVISTA Brands
-INVISTA's PET polymer is used in oxygen-sensitive packaging for food and beverages.
-ADI-PURE® Adipic Acid
-ANTRON® Carpet Fiber
-C12™ Intermediates
-COMFOREL® Fiber
-COOLMAX® Fabric
-CORDURA® Fabric
-DACRON® Fiberfill
-DYTEK® Idea Intermediates
-FLEXISOLV® Solvent Solutions
-LYCRA® Fiber
-LYCRA HyFit® Fiber
-OXYCLEAR® Barrier Resin
-POLYCLEAR® PET
-POLYSHIELD® Resin
-SENZAA™ Additive
-STAINMASTER® Carpet
-SUPPLEX® Fabric
-SUPRIVA™ Fiber
-TACTEL® Fiber
-TECGEN® Garments
-TERATE® Polyols
-TERATHANE® Polyether Glycol
-TERRIN™ Polyols
-THERMOLITE® Fabric
-TORZEN® PA66 Resin
Koch Fertilizer Company's AGROTAIN®nitrogen stabilizer fertilizer products are used around the world to improve nitrogen efficiency and enhance crop productions.
If you use building materials, be sure to check out the extensive list of Georgia-Pacific building products—including their product app.
*Disclaimer: The list is a work in progress, we are striving to keep it updated and accurate, please post corrections or additions with citations in the comments.
**Disclaimer: Note that some of these products are made in union facilities by union members. We are working to determine which those are, so you can make your best informed decisions.*
H/T to users kathybbb, ATexican, PeteInTX, BDA in VA, Melanie in IA, TheNewDeal00, Truth Told Here, workinguy, and geebeebee who've all posted similar information.